<!DOCTYPE html>
<html lang="zh-cn">
<head>
	<meta charset="utf-8">
	<title>024-其他伪类选择器.html</title>
	<style>
		p:before{
			content: "hello";
			color: red;
		}
		p:after{
			content: "be strong";
			color: blue;
		}
	</style>
</head>
<body>
	<p>vii</p>
</body>
</html>